Sleepy students

Dataset statistics

Number of variables	14
Number of observations	500
Missing cells	0
Missing cells (%)	0.0%
Duplicate rows	0
Duplicate rows (%)	0.0%
Total size in memory	54.8 KiB
Average record size in memory	112.3 B

Variable types

Numeric	12
Categorical	2

Alerts

`Student_ID` is uniformly distributed	Uniform
`Student_ID` has unique values	Unique
`Caffeine_Intake` has 85 (17.0%) zeros	Zeros

Reproduction

Analysis started	2024-10-17 14:23:07.168796
Analysis finished	2024-10-17 14:23:31.735578
Duration	24.57 seconds
Software version	ydata-profiling vv4.11.0
Download configuration	config.json

Student_ID
Real number (ℝ)

Uniform Unique

Distinct	500
Distinct (%)	100.0%
Missing	0
Missing (%)	0.0%
Infinite	0
Infinite (%)	0.0%
Mean	250.5

Minimum	1
Maximum	500
Zeros	0
Zeros (%)	0.0%
Negative	0
Negative (%)	0.0%
Memory size	4.0 KiB

Quantile statistics

Minimum	1
5-th percentile	25.95
Q1	125.75
median	250.5
Q3	375.25
95-th percentile	475.05
Maximum	500
Range	499
Interquartile range (IQR)	249.5

Descriptive statistics

Standard deviation	144.48183
Coefficient of variation (CV)	0.57677378
Kurtosis	-1.2
Mean	250.5
Median Absolute Deviation (MAD)	125
Skewness	0
Sum	125250
Variance	20875
Monotonicity	Strictly increasing

Histogram with fixed size bins (bins=50)

Value	Count	Frequency (%)
500	1	0.2%
1	1	0.2%
2	1	0.2%
3	1	0.2%
484	1	0.2%
483	1	0.2%
482	1	0.2%
481	1	0.2%
480	1	0.2%
479	1	0.2%
Other values (490)	490	98.0%

Value	Count	Frequency (%)
1	1	0.2%
2	1	0.2%
3	1	0.2%
4	1	0.2%
5	1	0.2%
6	1	0.2%
7	1	0.2%
8	1	0.2%
9	1	0.2%
10	1	0.2%

Value	Count	Frequency (%)
500	1	0.2%
499	1	0.2%
498	1	0.2%
497	1	0.2%
496	1	0.2%
495	1	0.2%
494	1	0.2%
493	1	0.2%
492	1	0.2%
491	1	0.2%

Age
Real number (ℝ)

Distinct	8
Distinct (%)	1.6%
Missing	0
Missing (%)	0.0%
Infinite	0
Infinite (%)	0.0%
Mean	21.536

Minimum	18
Maximum	25
Zeros	0
Zeros (%)	0.0%
Negative	0
Negative (%)	0.0%
Memory size	4.0 KiB

Quantile statistics

Minimum	18
5-th percentile	18
Q1	20
median	21
Q3	24
95-th percentile	25
Maximum	25
Range	7
Interquartile range (IQR)	4

Descriptive statistics

Standard deviation	2.3331505
Coefficient of variation (CV)	0.10833723
Kurtosis	-1.2277948
Mean	21.536
Median Absolute Deviation (MAD)	2
Skewness	-0.011547179
Sum	10768
Variance	5.4435912
Monotonicity	Not monotonic

Histogram with fixed size bins (bins=8)

Value	Count	Frequency (%)
21	76	15.2%
25	72	14.4%
18	71	14.2%
20	64	12.8%
23	62	12.4%
24	58	11.6%
22	51	10.2%
19	46	9.2%

Value	Count	Frequency (%)
18	71	14.2%
19	46	9.2%
20	64	12.8%
21	76	15.2%
22	51	10.2%
23	62	12.4%
24	58	11.6%
25	72	14.4%

Value	Count	Frequency (%)
25	72	14.4%
24	58	11.6%
23	62	12.4%
22	51	10.2%
21	76	15.2%
20	64	12.8%
19	46	9.2%
18	71	14.2%

Gender
Categorical

Distinct	3
Distinct (%)	0.6%
Missing	0
Missing (%)	0.0%
Memory size	4.0 KiB

Male	186
Female	166
Other	148

Length

Max length	6
Median length	5
Mean length	4.96
Min length	4

Characters and Unicode

Total characters	2480
Distinct characters	10
Distinct categories	1 ?
Distinct scripts	1 ?
Distinct blocks	1 ?

The Unicode Standard assigns character properties to each code point, which can be used to analyse textual variables.

Unique

Unique	0 ?
Unique (%)	0.0%

Sample

1st row	Other
2nd row	Male
3rd row	Male
4th row	Other
5th row	Male

Common Values

Value	Count	Frequency (%)
Male	186	37.2%
Female	166	33.2%
Other	148	29.6%

Length

Histogram of lengths of the category

Common Values (Plot)

Value	Count	Frequency (%)
male	186	37.2%
female	166	33.2%
other	148	29.6%

Most occurring characters

Value	Count	Frequency (%)
e	666	26.9%
a	352	14.2%
l	352	14.2%
M	186	7.5%
F	166	6.7%
m	166	6.7%
O	148	6.0%
t	148	6.0%
h	148	6.0%
r	148	6.0%

Most occurring categories

Value	Count	Frequency (%)
(unknown)	2480	100.0%

Most frequent character per category

(unknown)

Value	Count	Frequency (%)
e	666	26.9%
a	352	14.2%
l	352	14.2%
M	186	7.5%
F	166	6.7%
m	166	6.7%
O	148	6.0%
t	148	6.0%
h	148	6.0%
r	148	6.0%

Most occurring scripts

Value	Count	Frequency (%)
(unknown)	2480	100.0%

Most frequent character per script

(unknown)

Value	Count	Frequency (%)
e	666	26.9%
a	352	14.2%
l	352	14.2%
M	186	7.5%
F	166	6.7%
m	166	6.7%
O	148	6.0%
t	148	6.0%
h	148	6.0%
r	148	6.0%

Most occurring blocks

Value	Count	Frequency (%)
(unknown)	2480	100.0%

Most frequent character per block

(unknown)

Value	Count	Frequency (%)
e	666	26.9%
a	352	14.2%
l	352	14.2%
M	186	7.5%
F	166	6.7%
m	166	6.7%
O	148	6.0%
t	148	6.0%
h	148	6.0%
r	148	6.0%

University_Year
Categorical

Distinct	4
Distinct (%)	0.8%
Missing	0
Missing (%)	0.0%
Memory size	4.0 KiB

3rd Year	132
2nd Year	131
1st Year	125
4th Year	112

Length

Max length	8
Median length	8
Mean length	8
Min length	8

Characters and Unicode

Total characters	4000
Distinct characters	14
Distinct categories	1 ?
Distinct scripts	1 ?
Distinct blocks	1 ?

The Unicode Standard assigns character properties to each code point, which can be used to analyse textual variables.

Unique

Unique	0 ?
Unique (%)	0.0%

Sample

1st row	2nd Year
2nd row	1st Year
3rd row	4th Year
4th row	4th Year
5th row	4th Year

Common Values

Value	Count	Frequency (%)
3rd Year	132	26.4%
2nd Year	131	26.2%
1st Year	125	25.0%
4th Year	112	22.4%

Length

Histogram of lengths of the category

Common Values (Plot)

Value	Count	Frequency (%)
year	500	50.0%
3rd	132	13.2%
2nd	131	13.1%
1st	125	12.5%
4th	112	11.2%

Most occurring characters

Value	Count	Frequency (%)
r	632	15.8%
	500	12.5%
e	500	12.5%
Y	500	12.5%
a	500	12.5%
d	263	6.6%
t	237	5.9%
3	132	3.3%
n	131	3.3%
2	131	3.3%
Other values (4)	474	11.8%

Most occurring categories

Value	Count	Frequency (%)
(unknown)	4000	100.0%

Most frequent character per category

(unknown)

Value	Count	Frequency (%)
r	632	15.8%
	500	12.5%
e	500	12.5%
Y	500	12.5%
a	500	12.5%
d	263	6.6%
t	237	5.9%
3	132	3.3%
n	131	3.3%
2	131	3.3%
Other values (4)	474	11.8%

Most occurring scripts

Value	Count	Frequency (%)
(unknown)	4000	100.0%

Most frequent character per script

(unknown)

Value	Count	Frequency (%)
r	632	15.8%
	500	12.5%
e	500	12.5%
Y	500	12.5%
a	500	12.5%
d	263	6.6%
t	237	5.9%
3	132	3.3%
n	131	3.3%
2	131	3.3%
Other values (4)	474	11.8%

Most occurring blocks

Value	Count	Frequency (%)
(unknown)	4000	100.0%

Most frequent character per block

(unknown)

Value	Count	Frequency (%)
r	632	15.8%
	500	12.5%
e	500	12.5%
Y	500	12.5%
a	500	12.5%
d	263	6.6%
t	237	5.9%
3	132	3.3%
n	131	3.3%
2	131	3.3%
Other values (4)	474	11.8%

Sleep_Duration
Real number (ℝ)

Distinct	51
Distinct (%)	10.2%
Missing	0
Missing (%)	0.0%
Infinite	0
Infinite (%)	0.0%
Mean	6.4724

Minimum	4
Maximum	9
Zeros	0
Zeros (%)	0.0%
Negative	0
Negative (%)	0.0%
Memory size	4.0 KiB

Quantile statistics

Minimum	4
5-th percentile	4.2
Q1	5.1
median	6.5
Q3	7.8
95-th percentile	8.7
Maximum	9
Range	5
Interquartile range (IQR)	2.7

Descriptive statistics

Standard deviation	1.4857635
Coefficient of variation (CV)	0.22955372
Kurtosis	-1.2791132
Mean	6.4724
Median Absolute Deviation (MAD)	1.3
Skewness	-0.0061837749
Sum	3236.2
Variance	2.2074932
Monotonicity	Not monotonic

Histogram with fixed size bins (bins=50)

Value	Count	Frequency (%)
4.1	16	3.2%
8.4	16	3.2%
4.4	15	3.0%
5.2	14	2.8%
7.5	14	2.8%
4.9	14	2.8%
5.1	13	2.6%
4.2	13	2.6%
7	13	2.6%
8	13	2.6%
Other values (41)	359	71.8%

Value	Count	Frequency (%)
4	2	0.4%
4.1	16	3.2%
4.2	13	2.6%
4.3	10	2.0%
4.4	15	3.0%
4.5	9	1.8%
4.6	7	1.4%
4.7	10	2.0%
4.8	11	2.2%
4.9	14	2.8%

Value	Count	Frequency (%)
9	5	1.0%
8.9	10	2.0%
8.8	8	1.6%
8.7	13	2.6%
8.6	9	1.8%
8.5	7	1.4%
8.4	16	3.2%
8.3	11	2.2%
8.2	7	1.4%
8.1	10	2.0%

Study_Hours
Real number (ℝ)

Distinct	116
Distinct (%)	23.2%
Missing	0
Missing (%)	0.0%
Infinite	0
Infinite (%)	0.0%
Mean	5.9816

Minimum	0.1
Maximum	12
Zeros	0
Zeros (%)	0.0%
Negative	0
Negative (%)	0.0%
Memory size	4.0 KiB

Quantile statistics

Minimum	0.1
5-th percentile	0.695
Q1	2.9
median	6.05
Q3	8.8
95-th percentile	11.6
Maximum	12
Range	11.9
Interquartile range (IQR)	5.9

Descriptive statistics

Standard deviation	3.4757248
Coefficient of variation (CV)	0.58106941
Kurtosis	-1.174082
Mean	5.9816
Median Absolute Deviation (MAD)	2.95
Skewness	-0.0047545512
Sum	2990.8
Variance	12.080663
Monotonicity	Not monotonic

Histogram with fixed size bins (bins=50)

Value	Count	Frequency (%)
10.4	11	2.2%
8.3	10	2.0%
11.6	9	1.8%
7.9	8	1.6%
0.5	7	1.4%
1.6	7	1.4%
5.4	7	1.4%
6.2	7	1.4%
11.9	7	1.4%
8.8	7	1.4%
Other values (106)	420	84.0%

Value	Count	Frequency (%)
0.1	6	1.2%
0.2	2	0.4%
0.3	4	0.8%
0.4	5	1.0%
0.5	7	1.4%
0.6	1	0.2%
0.7	7	1.4%
0.8	4	0.8%
0.9	5	1.0%
1	5	1.0%

Value	Count	Frequency (%)
12	3	0.6%
11.9	7	1.4%
11.8	2	0.4%
11.7	5	1.0%
11.6	9	1.8%
11.5	5	1.0%
11.4	2	0.4%
11.3	1	0.2%
11.2	6	1.2%
11.1	4	0.8%

Screen_Time
Real number (ℝ)

Distinct	31
Distinct (%)	6.2%
Missing	0
Missing (%)	0.0%
Infinite	0
Infinite (%)	0.0%
Mean	2.525

Minimum	1
Maximum	4
Zeros	0
Zeros (%)	0.0%
Negative	0
Negative (%)	0.0%
Memory size	4.0 KiB

Quantile statistics

Minimum	1
5-th percentile	1.2
Q1	1.8
median	2.6
Q3	3.3
95-th percentile	3.8
Maximum	4
Range	3
Interquartile range (IQR)	1.5

Descriptive statistics

Standard deviation	0.85941386
Coefficient of variation (CV)	0.34036193
Kurtosis	-1.184962
Mean	2.525
Median Absolute Deviation (MAD)	0.8
Skewness	-0.071633318
Sum	1262.5
Variance	0.73859218
Monotonicity	Not monotonic

Histogram with fixed size bins (bins=31)

Value	Count	Frequency (%)
3.6	22	4.4%
2.8	21	4.2%
3.4	21	4.2%
3.5	21	4.2%
1.8	20	4.0%
3.2	20	4.0%
3	19	3.8%
2.4	19	3.8%
2.3	19	3.8%
1.2	19	3.8%
Other values (21)	299	59.8%

Value	Count	Frequency (%)
1	8	1.6%
1.1	14	2.8%
1.2	19	3.8%
1.3	18	3.6%
1.4	14	2.8%
1.5	13	2.6%
1.6	18	3.6%
1.7	14	2.8%
1.8	20	4.0%
1.9	16	3.2%

Value	Count	Frequency (%)
4	9	1.8%
3.9	14	2.8%
3.8	11	2.2%
3.7	17	3.4%
3.6	22	4.4%
3.5	21	4.2%
3.4	21	4.2%
3.3	14	2.8%
3.2	20	4.0%
3.1	13	2.6%

Caffeine_Intake
Real number (ℝ)

Zeros

Distinct	6
Distinct (%)	1.2%
Missing	0
Missing (%)	0.0%
Infinite	0
Infinite (%)	0.0%
Mean	2.462

Minimum	0
Maximum	5
Zeros	85
Zeros (%)	17.0%
Negative	0
Negative (%)	0.0%
Memory size	4.0 KiB

Quantile statistics

Minimum	0
5-th percentile	0
Q1	1
median	2
Q3	4
95-th percentile	5
Maximum	5
Range	5
Interquartile range (IQR)	3

Descriptive statistics

Standard deviation	1.6823247
Coefficient of variation (CV)	0.68331629
Kurtosis	-1.2310121
Mean	2.462
Median Absolute Deviation (MAD)	1
Skewness	0.0077235791
Sum	1231
Variance	2.8302164
Monotonicity	Not monotonic

Histogram with fixed size bins (bins=6)

Value	Count	Frequency (%)
2	92	18.4%
4	88	17.6%
0	85	17.0%
3	82	16.4%
1	79	15.8%
5	74	14.8%

Value	Count	Frequency (%)
0	85	17.0%
1	79	15.8%
2	92	18.4%
3	82	16.4%
4	88	17.6%
5	74	14.8%

Value	Count	Frequency (%)
5	74	14.8%
4	88	17.6%
3	82	16.4%
2	92	18.4%
1	79	15.8%
0	85	17.0%

Physical_Activity
Real number (ℝ)

Distinct	120
Distinct (%)	24.0%
Missing	0
Missing (%)	0.0%
Infinite	0
Infinite (%)	0.0%
Mean	62.342

Minimum	0
Maximum	120
Zeros	3
Zeros (%)	0.6%
Negative	0
Negative (%)	0.0%
Memory size	4.0 KiB

Quantile statistics

Minimum	0
5-th percentile	6
Q1	32.75
median	62.5
Q3	93.25
95-th percentile	115
Maximum	120
Range	120
Interquartile range (IQR)	60.5

Descriptive statistics

Standard deviation	35.191674
Coefficient of variation (CV)	0.56449383
Kurtosis	-1.2306294
Mean	62.342
Median Absolute Deviation (MAD)	30.5
Skewness	-0.088016992
Sum	31171
Variance	1238.4539
Monotonicity	Not monotonic

Histogram with fixed size bins (bins=50)

Value	Count	Frequency (%)
53	9	1.8%
27	9	1.8%
99	8	1.6%
108	8	1.6%
83	8	1.6%
92	8	1.6%
86	7	1.4%
85	7	1.4%
52	7	1.4%
46	7	1.4%
Other values (110)	422	84.4%

Value	Count	Frequency (%)
0	3	0.6%
1	1	0.2%
2	4	0.8%
3	5	1.0%
4	4	0.8%
5	4	0.8%
6	5	1.0%
7	6	1.2%
8	4	0.8%
9	6	1.2%

Value	Count	Frequency (%)
120	4	0.8%
119	5	1.0%
118	5	1.0%
117	3	0.6%
116	4	0.8%
115	6	1.2%
114	4	0.8%
113	5	1.0%
112	3	0.6%
111	3	0.6%

Sleep_Quality
Real number (ℝ)

Distinct	10
Distinct (%)	2.0%
Missing	0
Missing (%)	0.0%
Infinite	0
Infinite (%)	0.0%
Mean	5.362

Minimum	1
Maximum	10
Zeros	0
Zeros (%)	0.0%
Negative	0
Negative (%)	0.0%
Memory size	4.0 KiB

Quantile statistics

Minimum	1
5-th percentile	1
Q1	3
median	5
Q3	8
95-th percentile	10
Maximum	10
Range	9
Interquartile range (IQR)	5

Descriptive statistics

Standard deviation	2.9672487
Coefficient of variation (CV)	0.5533847
Kurtosis	-1.2742452
Mean	5.362
Median Absolute Deviation (MAD)	3
Skewness	0.040661416
Sum	2681
Variance	8.8045651
Monotonicity	Not monotonic

Histogram with fixed size bins (bins=10)

Value	Count	Frequency (%)
1	66	13.2%
6	57	11.4%
9	55	11.0%
3	54	10.8%
10	50	10.0%
2	46	9.2%
4	46	9.2%
7	45	9.0%
5	41	8.2%
8	40	8.0%

Value	Count	Frequency (%)
1	66	13.2%
2	46	9.2%
3	54	10.8%
4	46	9.2%
5	41	8.2%
6	57	11.4%
7	45	9.0%
8	40	8.0%
9	55	11.0%
10	50	10.0%

Value	Count	Frequency (%)
10	50	10.0%
9	55	11.0%
8	40	8.0%
7	45	9.0%
6	57	11.4%
5	41	8.2%
4	46	9.2%
3	54	10.8%
2	46	9.2%
1	66	13.2%

Weekday_Sleep_Start
Real number (ℝ)

Distinct	452
Distinct (%)	90.4%
Missing	0
Missing (%)	0.0%
Infinite	0
Infinite (%)	0.0%
Mean	11.16686

Minimum	1.08
Maximum	21.93
Zeros	0
Zeros (%)	0.0%
Negative	0
Negative (%)	0.0%
Memory size	4.0 KiB

Quantile statistics

Minimum	1.08
5-th percentile	2.229
Q1	6.0875
median	10.635
Q3	16.1525
95-th percentile	20.841
Maximum	21.93
Range	20.85
Interquartile range (IQR)	10.065

Descriptive statistics

Standard deviation	5.972352
Coefficient of variation (CV)	0.53482823
Kurtosis	-1.1495632
Mean	11.16686
Median Absolute Deviation (MAD)	5
Skewness	0.10794781
Sum	5583.43
Variance	35.668988
Monotonicity	Not monotonic

Histogram with fixed size bins (bins=50)

Value	Count	Frequency (%)
6.29	3	0.6%
13.29	2	0.4%
6.54	2	0.4%
12.49	2	0.4%
5.69	2	0.4%
2.08	2	0.4%
5.42	2	0.4%
13.26	2	0.4%
7.31	2	0.4%
3.76	2	0.4%
Other values (442)	479	95.8%

Value	Count	Frequency (%)
1.08	1	0.2%
1.17	2	0.4%
1.22	1	0.2%
1.24	1	0.2%
1.28	1	0.2%
1.31	1	0.2%
1.32	1	0.2%
1.33	1	0.2%
1.35	1	0.2%
1.5	1	0.2%

Value	Count	Frequency (%)
21.93	1	0.2%
21.89	2	0.4%
21.88	1	0.2%
21.86	1	0.2%
21.82	1	0.2%
21.71	1	0.2%
21.69	1	0.2%
21.68	1	0.2%
21.67	2	0.4%
21.64	1	0.2%

Weekend_Sleep_Start
Real number (ℝ)

Distinct	442
Distinct (%)	88.4%
Missing	0
Missing (%)	0.0%
Infinite	0
Infinite (%)	0.0%
Mean	12.37586

Minimum	2.05
Maximum	22
Zeros	0
Zeros (%)	0.0%
Negative	0
Negative (%)	0.0%
Memory size	4.0 KiB

Quantile statistics

Minimum	2.05
5-th percentile	3.1685
Q1	7.2975
median	12.69
Q3	17.3275
95-th percentile	20.9905
Maximum	22
Range	19.95
Interquartile range (IQR)	10.03

Descriptive statistics

Standard deviation	5.7896108
Coefficient of variation (CV)	0.46781483
Kurtosis	-1.2171067
Mean	12.37586
Median Absolute Deviation (MAD)	4.975
Skewness	-0.11019528
Sum	6187.93
Variance	33.519593
Monotonicity	Not monotonic

Histogram with fixed size bins (bins=50)

Value	Count	Frequency (%)
11.53	3	0.6%
8.96	3	0.6%
20.47	3	0.6%
15.25	3	0.6%
15.86	2	0.4%
15.36	2	0.4%
2.46	2	0.4%
8.67	2	0.4%
4.11	2	0.4%
15.63	2	0.4%
Other values (432)	476	95.2%

Value	Count	Frequency (%)
2.05	1	0.2%
2.06	1	0.2%
2.07	1	0.2%
2.11	2	0.4%
2.17	1	0.2%
2.2	1	0.2%
2.22	1	0.2%
2.25	1	0.2%
2.28	1	0.2%
2.3	1	0.2%

Value	Count	Frequency (%)
22	1	0.2%
21.97	1	0.2%
21.89	1	0.2%
21.87	1	0.2%
21.84	1	0.2%
21.81	1	0.2%
21.73	1	0.2%
21.66	1	0.2%
21.63	1	0.2%
21.53	1	0.2%

Weekday_Sleep_End
Real number (ℝ)

Distinct	289
Distinct (%)	57.8%
Missing	0
Missing (%)	0.0%
Infinite	0
Infinite (%)	0.0%
Mean	6.9299

Minimum	5
Maximum	8.98
Zeros	0
Zeros (%)	0.0%
Negative	0
Negative (%)	0.0%
Memory size	4.0 KiB

Quantile statistics

Minimum	5
5-th percentile	5.149
Q1	5.9
median	6.885
Q3	7.9725
95-th percentile	8.74
Maximum	8.98
Range	3.98
Interquartile range (IQR)	2.0725

Descriptive statistics

Standard deviation	1.1831742
Coefficient of variation (CV)	0.17073467
Kurtosis	-1.2740428
Mean	6.9299
Median Absolute Deviation (MAD)	1.05
Skewness	0.036455298
Sum	3464.95
Variance	1.3999012
Monotonicity	Not monotonic

Histogram with fixed size bins (bins=50)

Value	Count	Frequency (%)
8.98	5	1.0%
8.45	5	1.0%
5.27	4	0.8%
5.1	4	0.8%
6.23	4	0.8%
5.78	4	0.8%
5.24	4	0.8%
7.92	4	0.8%
5.22	4	0.8%
5.93	4	0.8%
Other values (279)	458	91.6%

Value	Count	Frequency (%)
5	1	0.2%
5.01	1	0.2%
5.02	1	0.2%
5.03	2	0.4%
5.04	2	0.4%
5.05	2	0.4%
5.06	3	0.6%
5.07	2	0.4%
5.08	3	0.6%
5.09	1	0.2%

Value	Count	Frequency (%)
8.98	5	1.0%
8.97	1	0.2%
8.95	2	0.4%
8.94	1	0.2%
8.92	1	0.2%
8.91	2	0.4%
8.87	1	0.2%
8.86	1	0.2%
8.85	2	0.4%
8.84	1	0.2%

Weekend_Sleep_End
Real number (ℝ)

Distinct	297
Distinct (%)	59.4%
Missing	0
Missing (%)	0.0%
Infinite	0
Infinite (%)	0.0%
Mean	8.9881

Minimum	7.02
Maximum	10.99
Zeros	0
Zeros (%)	0.0%
Negative	0
Negative (%)	0.0%
Memory size	4.0 KiB

Quantile statistics

Minimum	7.02
5-th percentile	7.2295
Q1	8.0475
median	9.005
Q3	9.925
95-th percentile	10.75
Maximum	10.99
Range	3.97
Interquartile range (IQR)	1.8775

Descriptive statistics

Standard deviation	1.1112528
Coefficient of variation (CV)	0.12363601
Kurtosis	-1.1323291
Mean	8.9881
Median Absolute Deviation (MAD)	0.945
Skewness	0.00021165508
Sum	4494.05
Variance	1.2348828
Monotonicity	Not monotonic

Histogram with fixed size bins (bins=50)

Value	Count	Frequency (%)
7.81	5	1.0%
10.17	5	1.0%
8.61	5	1.0%
10.41	4	0.8%
8.83	4	0.8%
9.07	4	0.8%
8.78	4	0.8%
10.25	4	0.8%
9.48	4	0.8%
8.95	4	0.8%
Other values (287)	457	91.4%

Value	Count	Frequency (%)
7.02	1	0.2%
7.03	1	0.2%
7.04	3	0.6%
7.06	1	0.2%
7.07	1	0.2%
7.08	2	0.4%
7.09	1	0.2%
7.1	1	0.2%
7.11	1	0.2%
7.12	1	0.2%

Value	Count	Frequency (%)
10.99	2	0.4%
10.98	1	0.2%
10.97	1	0.2%
10.95	1	0.2%
10.94	2	0.4%
10.92	2	0.4%
10.91	1	0.2%
10.89	1	0.2%
10.88	1	0.2%
10.87	1	0.2%

	Age	Caffeine_Intake	Gender	Physical_Activity	Screen_Time	Sleep_Duration	Sleep_Quality	Student_ID	Study_Hours	University_Year	Weekday_Sleep_End	Weekday_Sleep_Start	Weekend_Sleep_End	Weekend_Sleep_Start
Age	1.000	0.008	0.000	0.014	-0.085	-0.015	0.020	-0.011	0.060	0.000	0.021	0.011	0.058	0.010
Caffeine_Intake	0.008	1.000	0.060	-0.027	0.050	-0.013	-0.006	-0.026	0.033	0.030	0.007	-0.004	0.008	0.022
Gender	0.000	0.060	1.000	0.061	0.000	0.000	0.000	0.064	0.000	0.000	0.000	0.000	0.077	0.000
Physical_Activity	0.014	-0.027	0.061	1.000	-0.037	-0.005	-0.014	0.058	-0.047	0.064	0.034	-0.004	0.023	0.040
Screen_Time	-0.085	0.050	0.000	-0.037	1.000	0.071	0.010	-0.032	-0.041	0.000	-0.017	-0.070	-0.100	-0.046
Sleep_Duration	-0.015	-0.013	0.000	-0.005	0.071	1.000	-0.015	0.048	-0.010	0.070	-0.035	-0.077	-0.046	0.035
Sleep_Quality	0.020	-0.006	0.000	-0.014	0.010	-0.015	1.000	0.013	0.058	0.049	0.023	-0.014	-0.006	-0.003
Student_ID	-0.011	-0.026	0.064	0.058	-0.032	0.048	0.013	1.000	-0.055	0.000	0.050	0.038	-0.067	-0.043
Study_Hours	0.060	0.033	0.000	-0.047	-0.041	-0.010	0.058	-0.055	1.000	0.040	0.011	-0.006	0.056	-0.009
University_Year	0.000	0.030	0.000	0.064	0.000	0.070	0.049	0.000	0.040	1.000	0.039	0.030	0.028	0.000
Weekday_Sleep_End	0.021	0.007	0.000	0.034	-0.017	-0.035	0.023	0.050	0.011	0.039	1.000	-0.032	-0.000	-0.051
Weekday_Sleep_Start	0.011	-0.004	0.000	-0.004	-0.070	-0.077	-0.014	0.038	-0.006	0.030	-0.032	1.000	0.115	0.024
Weekend_Sleep_End	0.058	0.008	0.077	0.023	-0.100	-0.046	-0.006	-0.067	0.056	0.028	-0.000	0.115	1.000	0.075
Weekend_Sleep_Start	0.010	0.022	0.000	0.040	-0.046	0.035	-0.003	-0.043	-0.009	0.000	-0.051	0.024	0.075	1.000

A simple visualization of nullity by column.

Nullity matrix is a data-dense display which lets you quickly visually pick out patterns in data completion.

	Student_ID	Age	Gender	University_Year	Sleep_Duration	Study_Hours	Screen_Time	Caffeine_Intake	Physical_Activity	Sleep_Quality	Weekday_Sleep_Start	Weekend_Sleep_Start	Weekday_Sleep_End	Weekend_Sleep_End
0	1	24	Other	2nd Year	7.7	7.9	3.4	2	37	10	14.16	4.05	7.41	7.06
1	2	21	Male	1st Year	6.3	6.0	1.9	5	74	2	8.73	7.10	8.21	10.21
2	3	22	Male	4th Year	5.1	6.7	3.9	5	53	5	20.00	20.47	6.88	10.92
3	4	24	Other	4th Year	6.3	8.6	2.8	4	55	9	19.82	4.08	6.69	9.42
4	5	20	Male	4th Year	4.7	2.7	2.7	0	85	3	20.98	6.12	8.98	9.01
5	6	25	Other	1st Year	4.9	12.0	3.2	3	96	9	9.80	18.83	5.04	10.51
6	7	22	Female	2nd Year	6.5	11.7	3.4	1	99	6	13.05	20.96	8.58	10.81
7	8	22	Male	2nd Year	6.1	7.8	3.0	1	108	4	10.49	10.85	5.60	10.02
8	9	24	Female	1st Year	8.6	2.4	1.4	1	86	7	11.06	18.88	8.14	8.78
9	10	19	Other	2nd Year	5.8	8.2	2.0	3	44	8	14.65	5.31	7.47	9.37

	Student_ID	Age	Gender	University_Year	Sleep_Duration	Study_Hours	Screen_Time	Caffeine_Intake	Physical_Activity	Sleep_Quality	Weekday_Sleep_Start	Weekend_Sleep_Start	Weekday_Sleep_End	Weekend_Sleep_End
490	491	25	Other	3rd Year	4.4	7.5	2.3	3	91	3	16.96	6.17	5.69	8.00
491	492	22	Female	4th Year	4.3	4.6	2.2	0	75	3	18.97	3.68	6.91	9.04
492	493	18	Other	1st Year	5.2	2.5	3.7	4	37	6	19.57	14.80	7.95	10.64
493	494	23	Female	2nd Year	4.8	1.5	3.1	1	114	8	21.43	15.86	5.56	10.14
494	495	22	Other	3rd Year	8.4	7.4	2.8	4	35	7	11.00	18.10	6.76	8.95
495	496	24	Male	2nd Year	5.1	9.3	1.9	4	110	4	17.42	8.43	6.93	10.78
496	497	20	Male	2nd Year	8.9	7.7	3.5	3	40	4	1.22	15.54	5.85	7.23
497	498	21	Male	3rd Year	5.7	6.4	3.9	1	68	10	9.94	2.25	5.46	10.72
498	499	18	Female	2nd Year	4.9	0.5	3.5	0	12	2	19.10	15.49	8.35	7.20
499	500	21	Male	3rd Year	7.9	11.6	1.0	0	86	1	7.54	14.12	7.01	9.19

Overview

Common Values

Length

Common Values (Plot)

Most occurring characters

Most occurring categories

Most frequent character per category

(unknown)

Most occurring scripts

Most frequent character per script

(unknown)

Most occurring blocks

Most frequent character per block

(unknown)

Common Values

Length

Common Values (Plot)

Most occurring characters

Most occurring categories

Most frequent character per category

(unknown)

Most occurring scripts

Most frequent character per script

(unknown)

Most occurring blocks

Most frequent character per block

(unknown)

Interactions

Correlations

Missing values

Sample

Overview

Variables

Common Values

Length

Common Values (Plot)

Most occurring characters

Most occurring categories

Most frequent character per category

(unknown)

Most occurring scripts

Most frequent character per script

(unknown)

Most occurring blocks

Most frequent character per block

(unknown)

Common Values

Length

Common Values (Plot)

Most occurring characters

Most occurring categories

Most frequent character per category

(unknown)

Most occurring scripts

Most frequent character per script

(unknown)

Most occurring blocks

Most frequent character per block

(unknown)

Interactions

Correlations

Missing values

Sample